VC++实现通过API来查看程序错误信息的方法

if((m_hBitMap=(HBITMAP)::LoadImage(NULL,filepath,IMAGE_BITMAP,0,0,LR_DEFAULTSIZE|LR_LOADFROMFILE))==NULL){LPVOID lpMsgBuf;DWORD dw = ::GetLastError(); FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |FORMAT_MESSAGE_IGNORE_INSERTS,NULL,dw,MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),(LPTSTR)&lpMsgBuf,0, NULL );//显示出错信息并退出处理程序::MessageBox(NULL,(LPCTSTR)lpMsgBuf,TEXT("ERROR"),MB_ICONERROR); LocalFree(lpMsgBuf);return;}if((m_hBitMap=(HBITMAP)::LoadImage(NULL,filepath,IMAGE_BITMAP,0,0,LR_DEFAULTSIZE|LR_LOADFROMFILE))==NULL){LPVOID lpMsgBuf;DWORD dw = ::GetLastError(); FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |FORMAT_MESSAGE_IGNORE_INSERTS,NULL,dw,MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),(LPTSTR)&lpMsgBuf,0, NULL );//显示错误信息并退出处理进程::MessageBox(NULL,(LPCTSTR)lpMsgBuf,TEXT("ERROR"),MB_ICONERROR); LocalFree(lpMsgBuf);return;